EXERCISE 2: Use the correct form of verbs in brackets. 1. In all the world, there (be) __________ only 14 mountains that (reach) __________above 8,000 meters. 2. He sometimes (come) __________ to see his parents. 3. When I (come) __________, she (leave) __________for Dalat ten minutes ago. 4. My grandfather never (fly) __________ in an airplane, and he has no intention of ever doing so. 5. We just (decide) __________ that we (undertake) ____________ the job. 6. He told me that he (take) __________ a trip to California the following week. 7. I knew that this road (be) __________ too narrow. 8. Right now I (attend) __________ class. Yesterday at this time I (attend) __________class. 9. Tomorrow I'm going to leave for home. When I (arrive) __________at the airport, Mary (wait) __________ for me. 10. Margaret was born in 1950. By last year, she (live) __________on this earth for 55 years . 11. The traffic was very heavy. By the time I (get) __________to Mary's party, everyone already (arrive) __________ 12. I will graduate in June. I (see) __________ you in July. By the time I (see) __________ you , I (graduate) __________. 13. I (visit) __________ my uncle's home regularly when I (be) __________ a child. 14. That book (be) ________ on the table for weeks. You (not read) _______ it yet ? 15. David (wash) __________ his hands. He just (repair) __________ the TV set. 16. You (be) __________here before? Yes, I (spend) __________ my holidays here last year. 17. We never (meet) _________ him. We don't know what he (look) _________like. 18. The car (be) __________ ready for him by the time he (come) __________tomorrow. 19. On arriving at home I (find) __________that she just (leave) __________a few minutes before. 20. When we (arrive) __________ in London tonight, it probably (rain) __________. 21. It (rain) __________ hard. We can't do anything until it (stop) __________ 22. Last night we (watch) __________TV when the power (fail) __________. 23. That evening we (stay) __________up to talk about the town where he (live) __________for some years. 24. I (sit) __________down for a rest while the shoes (repair) __________. 25. Half way to the office Paul (turn) __________round and (go) __________back home because he (forget) __________to turn the gas off. 26. London (change) __________a lot since we first (come) _________ to live here. 27. While we (talk) __________on the phone the children (start) __________fighting and (break) __________a window 28. He used to talk to us for hours about all the interesting things he (do) __________ in his life. 29. You know she (stand) __________looking at that picture for the last twenty minutes. 30. I (spend) __________ a lot of time travelling since I (get) ________this new job. 31. When we (be) __________ at school we all (study) __________Latin. 32. When I (meet) __________ him , he (work) __________as a waiter for a year. 33. After he (finish) __________ breakfast he (sit) __________down to write some letters. 34. She (have) __________a hard life, but she's always smiling. 35. I think Jim (be) __________ out of town.

Viết tiếp vào chỗ chấm để so sánh hai số thập phân (theo mẫu): Mẫu: 29,78, < 31,02 (vì 29 < 31) a) 54,7 ... 54,69 (vì....) b) 0,6 ... 0,56 (vì....)

complete the second sentence so that it means the sames as the first

Sinh 12 ạ, cần gấp, giải giúp em với ạ.

Trọng thủy có nhìn thấy vua chém đầu Mị Châu không? Thể hiện đoạn nào trong truyện An Dương Vương Mị Châu - Trọng Thủy.

Mn giúp em đc j ạ K cần dài quá đâu

3. His idea is quite different mine. A. with B. of C. from D. on 4. There is nothing in the refrigerator. Let’s to the market. A. go B. going C. goes D. to go 5. Math books are on the shelves the right. A. on B. at C. to D. in 6. Students have two each day. A. 20-minute break B. 20-minutes break C. 20-minute breaks D. 20-minutes breaks 7. Would you like to music? A. listening B. to listen C. listen D. listens 8. In , we do some experiments. A. Math B. History C. Chemistry D. English 9. That’s a good ! Let’s go to the beach. A. thinking B. answer C. help D. idea 10. don’t you come to my house? -OK. Let’s go. A. Why B. Let’s C. When D. What 11. Tam enjoys soccer. A. playing B. to play C. plays D. play 12.Nga is a play for the school anniversary celebration. A.making B. rehearing C.doing D.practicing 13. What about Ha Long Bay? A.to visit B. visit C.visits D. visiting

A1-A2=40 và B3=70độ CMR:a song song với b

Cho hỗn hợp kim loại nhôm,Caxi,magie tan vào V lít HNO3 1M thu được 2,688 lít khí N2. Tìm V (đ/a 1,44)

giúp mình với mình cần cả lời giải ạ